content-change
                                Observe and react to changes in distributed nodes in web components, Shadow DOM v0.
                            
                        How to download and setup content-change
Open terminal and run command
                                            git clone https://github.com/kevinokerlund/content-change.git
                                        
                                        git clone is used to create a copy or clone of content-change repositories.
                                        You pass git clone a repository URL. it supports a few different network protocols and corresponding URL formats.
Also you may download zip file with content-change https://github.com/kevinokerlund/content-change/archive/master.zip
Or simply clone content-change with SSH
                                            [email protected]:kevinokerlund/content-change.git                                    
                                    If you have some problems with content-change
You may open issue on content-change support forum (system) here: https://github.com/kevinokerlund/content-change/issuesSimilar to content-change repositories
Here you may see content-change alternatives and analogs
storybook polymer wired-elements skatejs relative-time-element polymer-bundler stylable diffhtml hybrids web-component-tester polymer-cli ng2-semantic-ui simpla vaadin-core bem-components ajax-form vue-ui-framework polyserve server-components statblock5e polymer-analyzer webcomponents.org web-components-todo gwt-polymer-elements lume CleverStyle-Framework polymer-skeleton awesome-stenciljs spring vue-gwt